On Mon, Nov 30, 2015 at 07:05:21PM +0100, Andres Freund wrote: > On 2015-11-30 12:58:43 -0500, Bruce Momjian wrote: > > I would not bother mentioning this detail in the pg_upgrade manual page: > > > > + Since the format of visibility map has been changed in version 9.6, > > + <application>pg_upgrade</> creates and rewrite new > > <literal>'_vm'</literal> > > + file even if upgrading from 9.5 or before to 9.6 or later with link > > mode (-k). > > Might be worthwhile to keep as that influences the runtime for link mode > when migrating <9.6 -> 9.6.
It is hard to see that it would have a measurable duration. The pg_upgrade docs are already very long and this detail doesn't seems significant. Can someone test the overhead? -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + As you are, so once was I. As I am, so you will be. + + Roman grave inscription + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
